Coulee Dam, WA is a city located in Okanogan County, Washington and has a land area of 47.20 square miles (122.25 km2). The water area for the city is 4.43 square miles or 11.47 km2. There is one unique zip code in Coulee Dam, Washington and it is 99116. The area code(s) for Coulee Dam is 509.
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